【摘要】 将模糊PID的控制方法应用于超高压试验台,实现了超高压的比例精确控制。针对普通比例溢流阀无法调节超高压的问题,设计了超高压实现方案。为验证方案的可行性,用AMESim搭建了仿真模型,并确立了液阻大小、超高压泵的排量与转速范围等关键参数。为克服传统PID控制算法的不足,通过AMESim-Simulink联合仿真,并利用MATLAB的Fuzzy工具箱进行模糊PID控制器的设计。最后,搭建了Real-Time x PC Target实验平台,并进行了实验验证。实验结果表明系统的控制精度与超调均得到了改善。更多还原

【Abstract】 The fuzzy PID control method is applied to ultrahigh pressure test rig,and the ultrahigh pressure’s accurate control is realized. Firstly,the ultrahigh pressure implementation scheme is designed for ordinary proportional relief valve which can’t achieve ultrahigh pressure. Secondly the simulation model is built by AMESim,and the feasibility of the scheme is verified,and the key parameters such as the liquid resistance size,the displacement and the rev range of the ultrahigh pressure pump are determined. Then,the fuzzy PID controller is designed by the toolbox Fuzzy of MATLAB and the AMESim-Simulink co-simulation to overcome the traditional PID control’s weakness. Finally,the experimental platform of Real-Time x PC Target is built,and the experiment is conducted to validate the fuzzy PID control method. The experiment results show that the overshoot and control accuracy of the system are all improved.更多还原